| 501 | 1958 | Aaron Diamond Aids Research Center |  | 6421 | 3240 | 1968 | 2377 |
| 502 | 1969 | Centre Interuniversitaire de Recherche en Analyse des Organisations |  | 1259 | 1500 | 2538 | 2696 |
| 503 | 1974 | Instituto Interamericano de Cooperación para la Agricultura |  | 316 | 902 | 2368 | 3509 |
| 504 | 1982 | Center of Nuclear Technology Development Belo Horizonte |  | 3092 | 4521 | 792 | 2408 |
| 505 | 1985 | Cancer Research Institute | | 3175 | 615 | 2538 | 3316 |
| 506 | 1989 | New England Complex Systems Institute | | 4172 | 737 | 2355 | 3509 |
| 507 | 1995 | Centro de Investigación y Desarrollo Tecnológico en Electroquímica CONACYT |  | 3668 | 4135 | 1505 | 2339 |
| 508 | 1995 | Cooper Institute | | 4431 | 1065 | 2538 | 2981 |
| 509 | 2000 | National Institute of Health Center for Information Technology | | 1562 | 2714 | 2538 | 2039 |
| 510 | 2002 | Colegio de Michoacán CONACYT | | 1204 | 2503 | 1801 | 3076 |
| 511 | 2003 | Bloodworks Northwest (Puget Sound Blood Center) | | 4243 | 1513 | 2538 | 2627 |
| 512 | 2034 | Cooperative Association for Internet Data Analysis | | 652 | 418 | 2290 | 3879 |
| 513 | 2040 | Loyola Law School los Angeles | | 1267 | 605 | 1848 | 3879 |
| 514 | 2053 | Instituto Nacional da Propriedade Industrial | | 738 | 519 | 2152 | 3879 |
| 515 | 2058 | Mercy | | 1120 | 574 | 2006 | 3879 |
| 516 | 2064 | New York State Institute for Basic Research in Developmental Disabilities | | 3144 | 1943 | 2538 | 2487 |
| 517 | 2068 | FX Palo Alto Laboratory | | 3887 | 2250 | 1045 | 3316 |
| 518 | 2070 | Global Environment Facility | | 659 | 415 | 2355 | 3879 |
| 519 | 2071 | VA Healthcare System Ann Arbor | | 6688 | 6005 | 2538 | 352 |
| 520 | 2089 | Children's Oncology Group | | 5579 | 1369 | 2538 | 2822 |
| 521 | 2108 | Berkeley Geochronology Center | | 6863 | 3268 | 2465 | 2077 |
| 522 | 2115 | Social Science Research Council | | 567 | 216 | 2538 | 3879 |
| 523 | 2124 | Bigelow Laboratory for Ocean Sciences Phytoplankton | | 2685 | 1079 | 616 | 3879 |
| 524 | 2127 | Laboratório Nacional de Luz Síncrotron | | 5230 | 2639 | 2538 | 2124 |
| 525 | 2132 | Robert Wood Johnson Medical School | | 1615 | 1287 | 271 | 3879 |
| 526 | 2132 | Texas Transportation Institute | | 1468 | 801 | 1620 | 3879 |
| 527 | 2134 | Gatorade Sports Science Institute | | 3730 | 1167 | 2538 | 3076 |
| 528 | 2136 | Fundación Favaloro |  | 3580 | 2644 | 2538 | 2188 |
| 529 | 2139 | Sanford Burnham Prebys Medical Discovery Institute (Sanford-Burnham Medical Research Institute) | | 2598 | 1266 | 256 | 3879 |
| 530 | 2141 | Institute of Health Economics | | 2148 | 2555 | 2538 | 2313 |
| 531 | 2143 | Centro de Pesquisas René Rachou | | 4493 | 6995 | 829 | 1036 |
| 532 | 2145 | Empresa de Pesquisa Agropecuária de Minas Gerais | | 4893 | 2561 | 1898 | 3076 |
| 533 | 2145 | Instituto Nacional de Investigaciones Agropecuarias de Venezuela |  | 2199 | 1657 | 2188 | 3316 |
| 534 | 2151 | Botanical Research Institute of Texas | | 1221 | 1314 | 2538 | 3076 |
| 535 | 2156 | Instituto de Desenvolvimento Sustentável Mamirauá | | 2278 | 1991 | 1924 | 3316 |
| 536 | 2164 | VA Pittsburgh Healthcare System | | 4935 | 5901 | 2538 | 525 |
| 537 | 2169 | Lankenau Institute for Medical Research | | 7984 | 4962 | 1780 | 1649 |
| 538 | 2170 | Competitive Enterprise Institute | | 805 | 240 | 2538 | 3879 |
| 539 | 2171 | Michael E. DeBakey VA Medical Center | | 6414 | 5978 | 2538 | 446 |
| 540 | 2173 | National Institute of Nursing Research | | 4983 | 3067 | 2538 | 2002 |
| 541 | 2177 | American Association for Cancer Research | | 1418 | 227 | 2538 | 3879 |
| 542 | 2177 | Scripps Institution of Oceanography | | 856 | 243 | 2538 | 3879 |
| 543 | 2181 | Clay Mathematics Institute | | 2648 | 414 | 2538 | 3660 |
| 544 | 2194 | Rocky Mountain Institute | | 2553 | 215 | 2538 | 3879 |
| 545 | 2197 | Fundación Miguel Lillo | | 2383 | 3907 | 1657 | 2733 |
| 546 | 2202 | Rockefeller Foundation | | 3248 | 210 | 2538 | 3879 |
| 547 | 2207 | Fundação Zoobotânica do Rio Grande do Sul | | 3015 | 3218 | 1683 | 3034 |
| 548 | 2217 | Centro de Pesquisa Aggeu Magalhaes | | 2459 | 6820 | 757 | 1409 |
| 549 | 2223 | VCA Newark Animal Hospital | | 205 | 305 | 2538 | 3879 |
| 550 | 2236 | VA Boston Healthcare System | | 5535 | 5616 | 2538 | 728 |
| 551 | 2251 | Rocky Mountain Biological Laboratory | | 5459 | 2716 | 2538 | 2249 |
| 552 | 2260 | Institute of Particle Physics | | 6427 | 5638 | 2538 | 701 |
| 553 | 2266 | Cedars Sinai Medical Center | | 1221 | 277 | 2538 | 3879 |
| 554 | 2267 | Hospital San Juan de Dios |  | 4060 | 1815 | 2538 | 2822 |
| 555 | 2274 | Family Research Council | | 1976 | 273 | 2538 | 3879 |
| 556 | 2278 | Duke Health | | 1440 | 283 | 2538 | 3879 |
| 557 | 2278 | Instituto de Astronomía y Física del Espacio | | 5062 | 6259 | 1551 | 1526 |
| 558 | 2283 | Instituto Nacional de Investigación y Desarrollo Pesquero | | 2417 | 3679 | 2270 | 2584 |
| 559 | 2283 | Centro de Educacion Médica e Investigación Clinica | | 3942 | 3380 | 2538 | 2039 |
| 560 | 2291 | American College of Rheumatology | | 3942 | 252 | 2538 | 3879 |
| 561 | 2295 | Lovelace Respiratory Research Institute | | 7576 | 3506 | 2411 | 2249 |
| 562 | 2297 | Centro de Investigaciones Biológicas del Noroeste CONACYT | | 2373 | 3582 | 2538 | 2002 |
| 563 | 2301 | Ralph H. Johnson VA Medical Center | | 5175 | 5799 | 2538 | 722 |
| 564 | 2302 | Defense Information Systems Agency | | 1144 | 297 | 2538 | 3879 |
| 565 | 2307 | Institute of Museum and Library Services | | 1046 | 303 | 2538 | 3879 |
| 566 | 2318 | National Geospatial-Intelligence Agency (Defense Mapping Agency) | | 1259 | 301 | 2538 | 3879 |
| 567 | 2324 | Centro Cientifico Tecnologico CONICET La Plata | | 4768 | 5975 | 2538 | 661 |
| 568 | 2326 | Neri New England Research Institutes | | 7180 | 4444 | 2538 | 1366 |
| 569 | 2333 | Hospital Moinhos de Vento | | 2159 | 2914 | 2538 | 2408 |
| 570 | 2339 | Centro de Pesquisas de Energia Elétrica | | 3038 | 2377 | 2128 | 3252 |
| 571 | 2348 | Instituto de Biología Molecular y Celular de Rosario | | 4067 | 5283 | 1940 | 2064 |
| 572 | 2355 | National Center for Supercomputing Applications | | 1034 | 2048 | 2538 | 2919 |
| 573 | 2355 | Centro Nacional de Pesquisa em Energia e Materiais | | 1267 | 1563 | 555 | 3879 |
| 574 | 2355 | VA Medical Center Durham North Carolina | | 5893 | 6238 | 2538 | 541 |
| 575 | 2379 | VA Connecticut Healthcare System | | 6472 | 6215 | 2538 | 543 |
| 576 | 2389 | Rede Nacional de Ensino e Pesquisa | | 455 | 663 | 2442 | 3879 |
| 577 | 2402 | Center for Climate and Energy Solutions | | 3689 | 311 | 2538 | 3879 |
| 578 | 2402 | Employee Benefit Research Institute | | 2546 | 322 | 2538 | 3879 |
| 579 | 2406 | New York Blood Center | | 5460 | 1151 | 1249 | 3879 |
| 580 | 2408 | Treatment Research Institute Philadelphia | | 7461 | 2841 | 2538 | 2290 |
| 581 | 2414 | Instituto Nacional de Biodiversidad | | 7393 | 1303 | 2538 | 3140 |
| 582 | 2419 | Eastern Colorado VA Health Care System | | 6883 | 6168 | 2538 | 596 |
| 583 | 2421 | Kessler Rehabilitation Corporation | | 6351 | 2473 | 2538 | 2584 |
| 584 | 2425 | World Policy Institute | | 1713 | 350 | 2538 | 3879 |
| 585 | 2437 | VA Maryland Health Care System | | 4953 | 5837 | 2538 | 873 |
| 586 | 2445 | Louis Stokes Cleveland VA Medical Center | | 6295 | 6045 | 2538 | 698 |
| 587 | 2451 | Cancer Research and Biostatistics | | 5993 | 3536 | 2538 | 2077 |
| 588 | 2456 | Instituto Lauro de Souza Lima | | 960 | 4367 | 1705 | 2919 |
| 589 | 2458 | International Food Information Council | | 2151 | 359 | 2538 | 3879 |
| 590 | 2468 | National Technical Information Service | | 1267 | 386 | 2538 | 3879 |
| 591 | 2468 | Torrey Pines Institute for Molecular Studies | | 7297 | 4656 | 2103 | 2266 |
| 592 | 2473 | Natural Sciences and Engineering Research Council of Canada | | 556 | 431 | 2538 | 3879 |
| 593 | 2482 | Earthwatch Institute | | 2762 | 360 | 2538 | 3879 |
| 594 | 2493 | W K Kellogg Foundation | | 1817 | 395 | 2538 | 3879 |
| 595 | 2504 | British Columbia Cancer Research Centre | | 3848 | 2036 | 156 | 3879 |
| 596 | 2504 | Instituto de Botánica Darwinion | | 947 | 3531 | 1853 | 3191 |
| 597 | 2504 | Edison Welding Institute | | 3838 | 1796 | 2164 | 3509 |
| 598 | 2510 | Dauphin Island Sea Lab | | 3464 | 1316 | 1431 | 3879 |
| 599 | 2510 | Institute for Defense Analyses | | 3743 | 1256 | 1524 | 3879 |
| 600 | 2516 | Centre for International Governance Innovation (Institute of Strategic Studies) | | 1412 | 426 | 2538 | 3879 |
